| Acknowledgements | 第1-6页 |
| Abstract | 第6-8页 |
| 摘要 | 第8-11页 |
| List of Tables and Figures | 第11-12页 |
| Chapter One Introduction | 第12-18页 |
| ·Research background | 第12-13页 |
| ·Research objectives | 第13-16页 |
| ·Research significance | 第16-17页 |
| ·Structure of the thesis | 第17-18页 |
| Chapter Two Literature Review | 第18-26页 |
| ·Studies on children's L2 acquisition abroad and at home | 第18-24页 |
| ·Studies on children's L2 acquisition abroad | 第18-21页 |
| ·Studies on children's L2 vocabulary acquisition at home | 第21-24页 |
| ·Some aspects of children second language vocabulary acquisition | 第24-25页 |
| ·Summary | 第25-26页 |
| Chapter Three Conceptual Framework | 第26-37页 |
| ·Piaget's view of cognitive development | 第26-31页 |
| ·Piaget's four stages of cognitive development | 第26-28页 |
| ·Important concepts based on Piaget's cognitive theory | 第28-30页 |
| ·Piaget's theory as a theory of learning | 第30-31页 |
| ·Categorization and prototype theory | 第31-37页 |
| ·Definition of category and categorization | 第31-33页 |
| ·Prototype theory and basic level categories theory | 第33-36页 |
| ·The cognitive status of categories and prototypes | 第36-37页 |
| Chapter Four Methodology | 第37-43页 |
| ·Research questions | 第37页 |
| ·Justification for the research methods | 第37-38页 |
| ·Research design | 第38-43页 |
| ·The participant | 第38-40页 |
| ·Instruments | 第40-41页 |
| ·Data collection | 第41-42页 |
| ·Data analysis | 第42-43页 |
| Chapter Five Results | 第43-49页 |
| ·Description of participant's daily second language vocabulary acquisition | 第43-46页 |
| ·The types of vocabulary acquired by the participant | 第46-47页 |
| ·The sequence of participant's daily second language vocabulary acquisition | 第47-49页 |
| Chapter Six Discussion | 第49-61页 |
| ·Characteristics of children's second language vocabulary acquisition | 第49-55页 |
| ·Children's psychological and cognitive development decide the sequence of L2 vocabulary acquisition | 第49-51页 |
| ·Children undergo the process from unconscious to conscious when they acquiring L2 vocabulary | 第51-55页 |
| ·Strategies children used in second language vocabulary acquisition | 第55-61页 |
| ·Prototype vocabulary strategies are applied when L2 vocabulary is limited | 第56-58页 |
| ·The schema of redeploy existing prototype of L2 vocabulary to compound composite word forms | 第58-61页 |
| Chapter Seven Conclusions | 第61-65页 |
| ·Major findings of the study | 第61-62页 |
| ·Implications for the children's L2 vocabulary teaching | 第62-63页 |
| ·Limitations of the study and suggestions for further research | 第63-65页 |
| ·Limitations of this study | 第63-64页 |
| ·Suggestions for further study | 第64-65页 |
| References | 第65-68页 |
| Appendix 1: Samples of the observation diaries | 第68-70页 |
| Appendix 2: A sample of Transcription of tape-recording | 第70-71页 |
